WWT High-Temperature (HT) Non

NRPS
WWT High-Temperature (HT)
Non-Rotating Protectors (NRP)™
™
• Reduce rotary torque • Protect against casing and riser wear
• Reduce buckling, heat checking, vibration and stick slip
Model HT Specifications
NRP Model
HT-350
HT-400
HT-500
HT-550
HT-578
Drill Pipe Size
3-1/2”
4”
5”
5-1/2”
5-7/8”
Sleeve OD
5-1/2”
5-7/8”
7-1/4”
7-3/4”
8”
Collar OD
5”
5-1/2”
6-1/2”
7”
7-3/8”
Sleeve Length
10”
10”
10”
10”
10”
Overall Length
20”
20”
20”
20”
20”
Side-Load Rating
1,500 lbs.
1,500 lbs.
2,000 lbs.
2,000 lbs.
2,500 lbs.
7” Casing
8.3 in.2
6.184 in.2*
9-5/8” Casing
37 in.2
33.1 in.2
18 in.2
16.3 in.2
13.5 in.2
13-3/8” Casing
99 in.2
97 in.2
78 in.2
77 in.2
74.1 in.2
Total Flow Area
5-1/2” Casing
Collar Material
6061-T651 Extruded Aluminum Alloy
Sleeve Material
HNBR
Max. Temperature
300º F (149º C)
*29 ppf max weight for 7” casing
Features and Benefits
• Positive protection against casing and riser
wear during drilling operations.
• Significant torque reduction created by our
patented fluid bearing design allows for
improved ROP.
• Compatible with most oil-, synthetic- and
water-based drilling fluids.
• Optimum operating performance range of
30 - 250 RPM.
HOUSTON, TEXAS, USA
Tel: +1.281.345.8019 AL-KHOBAR, SAUDI ARABIA
Tel: +966.3.847.4307 • Reduces drillstring and surface equipment stress.
• Each assembly accepts up to 30,000 lbs. of
axial force before slippage.
• Installation time: less than 1 minute.
• Free, no-obligation confidential torque, drag and
wear analysis.
• Global leadership in some of the world’s most
challenging drilling environments since 1990.
• On/off-site technical support and direction.
QUITO, ECUADOR
Tel: +593.2.381.8057 DUBAI, UAE
Tel: +971.6.552.9542
RIO DE JANEIRO, BRASIL
Tel: +55.21.2224.8357
WWT International
www.wwtinternational.com
© 2014 WWT North America Holdings, Inc. All rights reserved.
is a trademark of WWT North America Holdings, Inc.
™ WWT High-Temperature (HT) Non-Rotating Protector is a trademark of WWT North America Holdings, Inc.
™
ABERDEEN, SCOTLAND
Tel: +44.1224.232185
™

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